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. 2015 Sep;37(8):803-7.
doi: 10.1016/j.braindev.2014.12.002. Epub 2014 Dec 19.

Giant Axonal Disease: Report of Eight Cases

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Giant Axonal Disease: Report of Eight Cases

Faruk Incecik et al. Brain Dev. .

Abstract

Background: Giant axonal neuropathy (GAN) is an autosomal recessive inherited progressive motor and sensory neuropathy with typical onset in early childhood. The disease is caused by GAN gene mutations on chromosome 16q24.1. To determine clinical and genetic results in Turkish patients with GAN.

Methods: Eight children with GAN were retrospectively analyzed. Five (62.5%) were girls and 3 (37.5%) were boys with the mean age on admission 10.13±3.8 years (range: 5-15 years).

Results: Parental consanguinity was found in all the families. The patients had the classical clinical phenotype characterized by a severe axonal neuropathy with kinky hair. Two patients had contractures of extremities, and not walking. One patient was walking with aid. The other patients were walking without aid. Mutation analysis was performed in two patients and IVS9 (+1G>T) (homozygous) mutation was detected.

Conclusion: The classical clinical findings allowed considering the GAN diagnosis, but, in atypical cases and milder phenotypes, the presence of giant axons in nerve biopsy was helpful to specify molecular analysis.

Keywords: Children; GAN mutations; Giant axonal neuropathy.

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